Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-02-08
Phys.Rev.D83:095006,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages, 5 figures
Scientific paper
10.1103/PhysRevD.83.095006
The anomalously large like-sign dimuon charge asymmetry in semileptonic b-hadron decays recently measured by the D0 Collaboration may be hinting at the presence of CP-violating new physics in the mixing of B_s mesons. It has been suggested that the effect of a nonstandard spin-1 particle lighter than the b quark with flavor-changing couplings to b and s quarks can reproduce the D0 result within its one-sigma range. Here we explore the possibility that the new particle also couples to charged leptons l=e,mu and thus contributes to rare b -> s processes involving the leptons. We consider in particular constraints on its couplings from existing experimental data on the inclusive B -> X_s l^+ l^- and exclusive B -> K^{(*)} l^+ l^- decays, as well as the anomalous magnetic moments of the leptons. We find that there is parameter space of the particle that is allowed by the current data. Future measurements of these B transitions and rare decays of the B_s meson, such as B_s -> (phi,eta,eta') l^+ l^- and B_s -> l^+ l^-, at LHCb and next-generation B factories can probe its presence or couplings more stringently.
Oh Sechul
Tandean Jusak
No associations
LandOfFree
Constraints on a New Light Spin-One Particle from Rare b -> s Transitions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Constraints on a New Light Spin-One Particle from Rare b -> s Transitions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints on a New Light Spin-One Particle from Rare b -> s Transitions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-502912